Variable Interest Entities (Details 5) (USD $) In Millions	3 Months Ended	12 Months Ended
Mar. 31, 2011	Dec. 31, 2010
Option Arms [Member]
Securitization activity [Abstract]
Principal securitized	$ 0
All cash flows during the period:
Proceeds from new securitizations	0
Servicing fees collected	103	117
Purchases of previously transferred financial assets (or the underlying collateral)	6	0
Cash flows received on the interests that continue to be held by the Firm	1	7
Subprime [Member]
Securitization activity [Abstract]
Principal securitized	0
All cash flows during the period:
Proceeds from new securitizations	0
Servicing fees collected	59	46
Purchases of previously transferred financial assets (or the underlying collateral)	6	0
Cash flows received on the interests that continue to be held by the Firm	5	4
Prime [Member]
Securitization activity [Abstract]
Principal securitized	0
All cash flows during the period:
Proceeds from new securitizations	0
Servicing fees collected	64	75
Purchases of previously transferred financial assets (or the underlying collateral)	379	48
Cash flows received on the interests that continue to be held by the Firm	61	159
Commercial and other [Member]
Securitization activity [Abstract]
Principal securitized	1,493
All cash flows during the period:
Proceeds from new securitizations	1,558
Servicing fees collected	1	1
Purchases of previously transferred financial assets (or the underlying collateral)		0
Cash flows received on the interests that continue to be held by the Firm	$ 47	$ 40

The principal amount of financial assets transferred during the period in securitizations accounted for as sales.

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- Definition

Securitization activity.

+ Details

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- Definition

This amount represents total cash flows received from retained interests by the transferor other than servicing fees. Other cash flows include, for example, all cash flows from interest-only strips and cash above the minimum required level in cash collateral accounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS140-4 and FIN46(R)-8

-Paragraph B11

-Subparagraph a(3)

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 140

-Paragraph 17

-Subparagraph h(4)

+ Details

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- Definition

The amount of proceeds from new securitizations or asset-backed financing arrangements during this reporting period for this class of securitization or asset-backed financing arrangement.

+ References

+ Details

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- Definition

The amount of cash outflow used to purchase previously transferred financial assets (or its underlying collateral), including delinquent or foreclosed assets, from the securitization or asset-backed financing arrangement SPE.

+ References

+ Details

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- Definition

The amount of servicing fees from the securitization or asset-backed financing arrangement SPE.

+ References

+ Details

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- Details

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